United States · 1991–2020

Best time to visit
Moss Beach.

September leads for comfortable weather in Moss Beach: typically 21.6°C by day, 12.3°C at night, with 3 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high21.6°C

Typical low12.3°C

Rain in September3 mm

Comfort

September

September · August · July

87climate match

Beach

September

September · August · July

54climate match

Outdoors

June

June · July · October

97climate match

The weakest month is January, scoring 31 against September’s 87 — days reach only 14°C, 10° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

3114° / 8°

Feb

3114.8° / 8.2°

Mar

4515.9° / 8.4°

Apr

6016.8° / 8.8°

May

7218.3° / 10.1°

Jun

7919.7° / 11°

Jul

8320.7° / 11.7°

Aug

8520.9° / 12.1°

Sep

8721.6° / 12.3°

Oct

8220.4° / 12°

Nov

5916.9° / 10.2°

Dec

3114.2° / 8.4°

Monthly climate evidence for Moss Beach — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 15 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	14°C	8°C	159 mm	9.5	11.9°C	9 h 50	31	Good coverage
February	14.8°C	8.2°C	175 mm	10.9	12.0°C	10 h 45	31	Good coverage
March	15.9°C	8.4°C	110 mm	8.8	12.1°C	11 h 50	45	Good coverage
April	16.8°C	8.8°C	54 mm	5.5	11.6°C	13 h 07	60	Good coverage
May	18.3°C	10.1°C	30 mm	3.4	11.8°C	14 h 10	72	Good coverage
June	19.7°C	11°C	6 mm	1.1	12.4°C	14 h 44	79	Good coverage
July	20.7°C	11.7°C	0 mm	0.2	13.6°C	14 h 31	83	Good coverage
August	20.9°C	12.1°C	3 mm	0.5	14.4°C	13 h 36	85	Good coverage
September	21.6°C	12.3°C	3 mm	0.8	14.6°C	12 h 23	87	Good coverage
October	20.4°C	12°C	39 mm	2.7	13.9°C	11 h 09	82	Good coverage
November	16.9°C	10.2°C	78 mm	6.2	13.1°C	10 h 06	59	Good coverage
December	14.2°C	8.4°C	174 mm	9.4	12.2°C	9 h 35	31	Good coverage

Records at PACIFICA 4 SSE, 1983–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C13 Jan 2009	-1.7°C31 Jan 2010	92 mm24 Jan 2000	350 mm1993 · driest 11 mm in 1984	29
February	25.6°C27 Feb 1992	-2.8°C6 Feb 1989	88 mm16 Feb 2009	458 mm1998 · driest 9 mm in 1997	29
March	27.8°C11 Mar 2005	0.6°C11 Mar 2006	64 mm9 Mar 1995	282 mm1991 · driest 3 mm in 1988	29
April	33.9°C21 Apr 2009	2.8°C9 Apr 1999	40 mm12 Apr 2006	137 mm2003 · driest 3 mm in 1985	29
May	35.0°C15 May 2008	3.3°C11 May 2000	33 mm16 May 1996	128 mm1998 · driest 0 mm in 1985	28
June	36.7°C14 Jun 2000	6.7°C10 Jun 1984	30 mm4 Jun 2011	56 mm2011 · driest 0 mm in 2008	28
July	37.8°C17 Jul 1988	5.6°C5 Jul 2000	5 mm13 Jul 2011	7 mm2011 · driest 0 mm in 1986	29
August	35.6°C24 Aug 2010	4.4°C16 Aug 2000	18 mm20 Aug 1997	24 mm1997 · driest 0 mm in 2001	28
September	36.7°C8 Sep 1984	2.2°C2 Sep 1994	19 mm24 Sep 1986	51 mm1986 · driest 0 mm in 2006	28
October	38.9°C5 Oct 1987	3.3°C25 Oct 2000	117 mm13 Oct 2009	121 mm2009 · driest 0 mm in 1995	28
November	27.2°C6 Nov 1991	1.7°C13 Nov 2009	103 mm5 Nov 1994	231 mm1983 · driest 3 mm in 1986	30
December	23.3°C18 Dec 1998	-5.6°C30 Dec 2000	127 mm27 Dec 2004	400 mm2002 · driest 1 mm in 1989	28

Typical days per month at PACIFICA 4 SSE, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	0	0	5
February	0	0	6
March	<1	0	4
April	1	<1	2
May	2	<1	1
June	3	1	<1
July	4	<1	0
August	4	<1	<1
September	6	2	0
October	5	<1	1
November	<1	0	3
December	0	0	5

How often, not how much — every day in PACIFICA 4 SSE’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	2%	29%	15%	34%	12.8–15.2°C
February	9%	36%	18%	45%	12.9–16.5°C
March	14%	29%	13%	31%	13.6–17.6°C
April	23%	18%	7%	15%	14.7–19.4°C
May	32%	11%	4%	8%	16.2–20.8°C
June	49%	4%	<1%	<1%	17.9–21.6°C
July	65%	<1%	0%	0%	18.6–23.9°C
August	70%	1%	<1%	<1%	19.6–23.2°C
September	70%	4%	<1%	1%	20.3–23.5°C
October	49%	9%	3%	6%	19.2–22.3°C
November	18%	23%	10%	27%	14.6–18.7°C
December	2%	30%	16%	39%	12.3–15.2°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1984Each stripe is one year’s mean temperature against the 24-year average. Warmest: 2004. Coolest: 2011.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5375034
NOAA station: USC00046599 · PACIFICA 4 SSE
Station distance: 8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 37.53°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 15 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from PACIFICA 4 SSE is what differs

Pacifica→Montara→Edgemar→Fairway Park→Linda Mar→Millbrae Meadows→

Or put two places side by side: Moss Beach vs Pacifica

Best time to visitMoss Beach.

September

September

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Moss Beach.

The whole year,
without the guesswork.

Nearby, measured,
and named.